Swindon
September
Weather in Swindon for September 2025
Your guide to Swindon weather in September - trends and predictions
Until now, September 2025 in Swindon is slightly cooler than the historical average by -1.8 °C.
Expect cooler weather in the next days in Swindon with the forecast suggesting a temperature of 17.6 °C, lower than the historical average.
In general, the average temperature in Swindon at the beginning of September is 20.9 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 16.3 °C by the end of September.
The climate of Swindon in September is notably wet, with an average of 12 rainy days, and a total of 200.3 mm of precipitation.
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Temperatures
Rain 🌧️
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18
Dry days
12
Rainy days
0
Snow days
21°/8°
Temperatures
22 km/h
Avg max wind
80 %
Avg humidity
Swindon Weather September
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Temperatures trend during September in Swindon
See the weather trend as well as the moving average line
September weather in Swindon day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Light rain shower | 20° /11° | 6.4 mm | 5 | |
| 2 Sept. |  Overcast | 20° /12° | 2.9 mm | 5 | |
| 3 Sept. | Light rain shower | 20° /11° | 2.4 mm | 4 | |
| 4 Sept. |  Sunny | 19° /12° | 3 mm | 5 | |
| 5 Sept. | Sunny | 21° /11° | 9.4 mm | 5 | |
| 6 Sept. |  Partly cloudy | 23° /13° | 2.8 mm | 5 | |
| 7 Sept. | Sunny | 23° /13° | 0.8 mm | 5 | |
| 8 Sept. | Partly cloudy | 22° /13° | 10.4 mm | 5 | |
| 9 Sept. | Sunny | 22° /12° | 0.2 mm | 5 | |
| 10 Sept. | Partly cloudy | 21° /11° | 1.5 mm | 5 | |
| 11 Sept. | Light rain shower | 17° /9° | 1.6 mm | 4 | |
| 12 Sept. | Light rain shower | 15° /8° | 1.7 mm | 4 | |
| 13 Sept. | Overcast | 15° /8° | 1.2 mm | 3 | |
| 14 Sept. | Overcast | 17° /8° | 3.6 mm | 4 | |
| 15 Sept. | Patchy rain possible | 16° /12° | 2.3 mm | 0.8 | |
| 16 Sept. | Patchy rain possible | 17° /11° | 0.2 mm | 0.8 | |
| 17 Sept. | Patchy rain possible | 17° /11° | 3.7 mm | 0.2 | |
| 18 Sept. | Partly cloudy | 22° /15° | 0 mm | 1 | |
| 19 Sept. | Patchy rain possible | 21° /14° | 0.2 mm | 0.7 | |
| 20 Sept. | Patchy rain possible | 18° /13° | 0.1 mm | 4 | |
| 21 Sept. | Patchy rain possible | 19° /12° | 0.9 mm | 4 | |
| 22 Sept. | Patchy rain possible | 18° /10° | 0.3 mm | 3 | |
| 23 Sept. | Patchy rain possible | 14° /12° | 5 mm | 3 | |
| 24 Sept. | Patchy rain possible | 17° /12° | 0.6 mm | 3 | |
| 25 Sept. | Patchy rain possible | 16° /11° | 0.9 mm | 3 | |
| 26 Sept. | Sunny | 18° /9° | 0 mm | 4 | |
| 27 Sept. | Patchy rain possible | 19° /15° | 0.1 mm | 4 | |
| 28 Sept. | Patchy rain possible | 15° /11° | 0.6 mm | 3 | |
| 29 Sept. | Partly cloudy | 14° /8° | 5.5 mm | 4 | |
| 30 Sept. | Overcast | 15° /9° | 5.5 mm | 4 | |
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Important Notice
Our weather forecast for Swindon in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Swindon forecast closer to your planned date for the most up-to-date weather information.
Change Month
Swindon in September - FAQ
What are the expected maximum and minimum temperatures in Swindon during September?
Enjoy moderate daytime temperatures of up to 21° and cooler nights around 8°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Swindon during September?
Significant rainfall exceeding 200.3 mm is expected in Swindon during September, occurring over more than 12 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Swindon during September?
The average wind speed in Swindon during September is 22 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Swindon
Explore the daily rainfall trends and prepare for Swindons September weather 💧
UV exposure in Swindon during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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